The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
"You can't change the past, but you can change the meaning of the past."
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
The true history of the world is the history of great men.
可持续性不仅仅是一个目标，更是我们对未来肩负的责任。
释义：看见一片落叶，就知道一年内的时间将要到头了。通过细微的迹象，可以预料到整个形势的发展趋向与结果。
Memory is fragile, and my work is about trying to preserve what inevitably disappears.